KVM: s390: unintended fallthrough for external call
commit f346026e55f1efd3949a67ddd1dcea7c1b9a615e upstream.
We must not fallthrough if the conditions for external call are not met.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Zefan Li <lizefan@huawei.com>
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 10e13b3..df69bcb 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -43,6 +43,7 @@
return 0;
if (vcpu->arch.sie_block->gcr[0] & 0x2000ul)
return 1;
+ return 0;
case KVM_S390_INT_EMERGENCY:
if (psw_extint_disabled(vcpu))
return 0;